Auto-jack.



C. KNUDSON & E. J. BRUMBACH.

AUTO JACK.

APPLICATION FILED APR. so, 191s.

Patented Dec. 9, 1913.

2 SHEETS-SHEET 1.

nr 'Illilmwi llll'llnE o. KNUDSON & E. J. BRUMBACH.

AUTO JACK.

APPLICATION FILED APR. 30i 1913.

-SHBET 2.

2 SHEETS Patented Dec. 9

E @Milind AUTOJACK.

To all 'whom t may concern:

Be it known that we, CHAnLus KNrrnsoN and EvAnn J. BRUMBACH, citizens of the United States, residing at Pontiac, in the county of Livingstcn, State of Illinois. have invented certain -new and useful Improvements in Auto-Jacks; and We do here )y declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it :ip-pertains to make and use the same.

This invention relates to new and useful improvements in jacks and has particular reference to that class ot`vehicle jacks by means of which a vehicle may be raised from the ground by its momentum.

The object of the invention is to provide a jack whereby a vehicle may be driven into operative engagement with the jack, so that it will be raised above the ground by its own momentum. i

A further object is to provide etlicient means for automatically locking the vehicle in a raised position.

A still further object is to provide means for checking` the momentum of the vehicle when the same has been raised above the ground and in proper position.

lVith these and other objects in view, the invention resides in the novel combination, `formation and arrangement of parts to be more fully hereinafter described and illustrated in the accompanying,r drawings.

Reference is had to the accompanying drawings wherein similar characters of reference designate corresponding parts throughout the several views, and in which:

Figure l is a side elevational view of the device with a vehicle positioned in relation thereto. Fig. 9. is a similar view but showingthe jack in position to receive a vehicle. F ig. 3 is a top lan view thereof. Fig. 4 is a vertical longitudinal sectional view ofthe upper end of the jack, taken through one ot the track rails.I Fig. 5 is a similar view of the lower end of the jack. Fig. 6 is a verticalsectional view taken on the line 6-6of Fig. 3. Fig. 7 is a detail view showing the locking pawl in oprative position. Fig. 8 is a detail view of one ot' the supporting standards.

Referring more particularly to the accompanying drawings, 5 designates one of the corner base members of the device fromu whichextends a standard 6 of channel iron l.provided with a slot 7. The channel track Specification of Letters Patent.

Application filed April 80. 1913.

1 atcntcd Dec. 9, 1 913.

VSerial No. 7641575.

rails S are provided adjacent each end thereof with a depending `channel member 9 which `fits over the channel member. 7 and is provided with an opening through which is passed a bolt 10 for adjustably securing the standards in relation. A bracememher 11 connects the standards-at adjacenty ends of the rails and a brace member 12 is secured to the standard 9 and its adjacent rail. lt will thus be observed that there is provided an etlicient and rigid structure which may be adjusted vertically with 'relation to the ground. The truck members which ride in these channel track rails comprise a pair of forward trucks A which are connected by a transverse bar 13 and a pair ot trucks l each ot' which is connected to its adjacent truck A by means of a rod 14 which is secured at one end to the transverse rod 13 adjacent the forward truck member and which is pivbtally connected as i at 15 to the truck, B. Fmch truck comprises the side walls 1G, a top portion 17 which is provided. at one end with an upward eX- tension 1S for engaging the axle of the vehicle. The rollers 19 have their pivots journaled in the walls 1G of the trucks.

It will be noted that the upward extension 1S of each `forward truck is disposed at the forward end ot the truck and the up ward extensions of the other pair of trucks are disposed at the rear ends thereof. The rear end of the` tracks are bent downwardly past the standards' as at QU and provided with end portions Q1. These portions are adapted to receive the rear trucks B and hold them below the plane of the axles of the vehicle. lVhen the vehicle is driven int-o engagement with the device the front axle of the vehicle engages the upward extensions or stops 1S of the forward trucks A and resting thereon draws t-he forward trucks to the upper end of the device by its momentum: The connecting rods between the forward trucks and the rear trucks B then draw the said rear trucks out of the downward extension Q0 so that they engage with the rear axle 'of the vehicle.

lt'. has been before stated thatthe tracks slant upwardly with relation to the ground. Therefore, as the momentum of the vehicle carries it along the Wheels will leave the ground and the machine will be supported wholly by the pairs of trucks A and B. Means are provided at the upper end of the 'tracks 'for eheckine the momentum-'of the*- vehicle, and for automatically locking the vehicle inraised position. The walls of the y posed in aplane parallel to the plane of the trucks B are much higher than the walls of the truck A, so that when the machine is at rest in raised position the same will be dirground.

For checking the momentum.' of the ve- I hicle the upper ends of the track rails are upwardly extended .as at 22 and provided with end portions 23. Seated in these por-- tions 22 and bearing against the portions 23 are coiled springs 24 which are adapted to be' engaged by the rollers 19. Both the springs and the upward extensions serve to wardly of this cani portion with a shoulder 29 which engages the transverse member to prevent the trucks from sliding downwardly after they have reached a raised position. A coil spring 30 is secured to the operating arm 27 of the latch member and has its other end attached to one of the bars so as to always holdvtlie latch member in operative position. The lower end'olt the operating rod 26 is provided with an opening 31 in which may be secured an operating cord so'that the latch maybe actuatedfrom any desired point to release the vehicle.

When the vehicle is released the taper of the track members will cause it to ride toward the lower end of the jack 10, the track member B seating' in theA downward extensions 20, to release the rear axle of thev vehicle. The momentum gained will Iserve to carry the vehicle away from the jack.

' What is claimed is 1. A jack for raising vehicles comprising a frame, a pair oftracks carried by the frame and disposed in an inclined plane, the lower ends of the tracks being provlded 'with downward extensions, a pair of forward trucks mounted on the tracks, a transverse rod connecting the'trucks, apair of rear trucks mounted in the tracks, rods connecting the adjacent front and rear trucks and the rearv trucks adapted to sea-t in the down- ,ward extensions of the'tracks.

2. A jack for raising vehicles comprising a frame, trackscarried bythe frame and disposed 4in "an inclined plane, a pair of forward trucks mounted on the tracks, a transipeaaea verse rod connecting the said trucks, a pair of rear trucks on the tracks, and rods se- -cured to the transverse rod and having pivoted engagement with the rear trucks the height of the rear trucks being greater than the heightcf 'the iront trucks.

A jack for raising vehicles comprising a frame, tracks carried by the trame and disposed in an inclined plane, trucks mounted on the tracks, means connecting the trucks, ,the u per ends ofthe tracks being provided wit upward extensions and buffer means carried by the said upper extensions for checking the momentum of lthe trucks.

a. A jack for raising vehicles comprising a frame, tracks carried by the frame and disposed-in an inclined plane, a pair of forward trucks mounted, on the tracks, a transverse rod connecting the trucks, a pair of rear trucks mounted on the tracks, rods 'con- .necting the front and rear trucks anda spring pressed pawl carried at the upper ends of the tracks to engage the said transverse rod to automatically lock the trucks against downward movement.

5. AI jack for raising vehicles-comprising a frame, a pair of trackscarried by the frame and disposed in an inclined plane, a pair of forward trucks mounted on the tracks, each of said trucks being provided at its forward endwith an upwardly` extending stop7 a transverse rod connecting. .the trucks, a pair of rear trucks, mounted on the tracks, each of said trucks being provided at its rear end with an upwardly ex tending stop, the lower ends of the tracks being provided with downward extensions and the rear trucks adapted to scat in the said extensions.

6.4 A jack for raising vehicles comprising a plurality of standards and a pair of parallel trucks carried by the standards and disposed in an inclined plane, upper extensions at the forward ends of the tracks, buffer springs carried in the upper extensions, downward extensions at the' lower endsof the tracksfforward and rear pairs oftruck'members mounted in the tracks, the

rear pairs of truck members adapted to seat 1n. the downward extensions, means for connecting. the truck members and means :ter automatically locking the truck members at the upper ends of the tracks.

lln testimony whereof, we ailixour signatures in the presence of two witnesses.

cir-mains intensos. avalan" a. Beurteilen.-

Witnesses ANTON FISCHER,

LOLA RnINBoLD.

Uopies cf time patent may 'be 'obtained forve cents each; tiff addressing the Commissioner of Patents,

' 4Wanninfrtcn, C. 

